# # This file defines the following macros for developers to use in ensuring
# # that installed software is of the right version:
# #
# # ENSURE_VERSION        - test that a version number is greater than
# #                               or equal to some minimum
# # ENSURE_VERSION_RANGE - test that a version number is greater than
# #                               or equal to some minimum and less than some
# #                               maximum
# # ENSURE_VERSION2       - deprecated, do not use in new code
# #

# # ENSURE_VERSION
# # This macro compares version numbers of the form "x.y.z" or "x.y"
# # ENSURE_VERSION( FOO_MIN_VERSION FOO_VERSION_FOUND FOO_VERSION_OK)
# # will set FOO_VERSION_OK to true if FOO_VERSION_FOUND >= FOO_MIN_VERSION
# # Leading and trailing text is ok, e.g.
# # ENSURE_VERSION( "2.5.31" "flex 2.5.4a" VERSION_OK)
# # which means 2.5.31 is required and "flex 2.5.4a" is what was found on the system

# # Copyright (c) 2006, David Faure, <faure@kde.org>
# # Copyright (c) 2007, Will Stephenson <wstephenson@kde.org>
# #
# # Redistribution and use is allowed according to the terms of the BSD license.
# # For details see the accompanying COPYING-CMAKE-SCRIPTS file.

# # ENSURE_VERSION_RANGE
# # This macro ensures that a version number of the form
# # "x.y.z" or "x.y" falls within a range defined by
# # min_version <= found_version < max_version.
# # If this expression holds, FOO_VERSION_OK will be set TRUE
# #
# # Example: ENSURE_VERSION_RANGE3( "0.1.0" ${FOOCODE_VERSION} "0.7.0" FOO_VERSION_OK )
# #
# # This macro will break silently if any of x,y,z are greater than 100.
# #
# # Copyright (c) 2007, Will Stephenson <wstephenson@kde.org>
# #
# # Redistribution and use is allowed according to the terms of the BSD license.
# # For details see the accompanying COPYING-CMAKE-SCRIPTS file.

# # NORMALIZE_VERSION
# # Helper macro to convert version numbers of the form "x.y.z"
# # to an integer equal to 10^4 * x + 10^2 * y + z
# #
# # This macro will break silently if any of x,y,z are greater than 100.
# #
# # Copyright (c) 2006, David Faure, <faure@kde.org>
# # Copyright (c) 2007, Will Stephenson <wstephenson@kde.org>
# #
# # Redistribution and use is allowed according to the terms of the BSD license.
# # For details see the accompanying COPYING-CMAKE-SCRIPTS file.

# # CHECK_RANGE_INCLUSIVE_LOWER
# # Helper macro to check whether x <= y < z
# #
# # Copyright (c) 2007, Will Stephenson <wstephenson@kde.org>
# #
# # Redistribution and use is allowed according to the terms of the BSD license.
# # For details see the accompanying COPYING-CMAKE-SCRIPTS file.


# MACRO(NORMALIZE_VERSION _requested_version _normalized_version)
#     STRING(REGEX MATCH "[^0-9]*[0-9]+\\.[0-9]+\\.[0-9]+.*" _threePartMatch "${_requested_version}")
#     if (_threePartMatch)
#     # parse the parts of the version string
#         STRING(REGEX REPLACE "[^0-9]*([0-9]+)\\.[0-9]+\\.[0-9]+.*" "\\1" _major_vers "${_requested_version}")
#         STRING(REGEX REPLACE "[^0-9]*[0-9]+\\.([0-9]+)\\.[0-9]+.*" "\\1" _minor_vers "${_requested_version}")
#         STRING(REGEX REPLACE "[^0-9]*[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" _patch_vers "${_requested_version}")
#     else (_threePartMatch)
#         STRING(REGEX REPLACE "([0-9]+)\\.[0-9]+" "\\1" _major_vers "${_requested_version}")
#         STRING(REGEX REPLACE "[0-9]+\\.([0-9]+)" "\\1" _minor_vers "${_requested_version}")
#         set(_patch_vers "0")
#     endif (_threePartMatch)

#     # compute an overall version number which can be compared at once
#     MATH(EXPR ${_normalized_version} "${_major_vers}*10000 + ${_minor_vers}*100 + ${_patch_vers}")
# ENDMACRO(NORMALIZE_VERSION)

# MACRO(CHECK_RANGE_INCLUSIVE_LOWER _lower_limit _value _upper_limit _ok)
#    if (${_value} LESS ${_lower_limit})
#       set( ${_ok} FALSE )
#   elseif (${_value} EQUAL ${_lower_limit})
#       set( ${_ok} TRUE )
#   elseif (${_value} EQUAL ${_upper_limit})
#       set( ${_ok} FALSE )
#   elseif (${_value} GREATER ${_upper_limit})
#       set( ${_ok} FALSE )
#   else (${_value} LESS ${_lower_limit})
#       set( ${_ok} TRUE )
#   endif (${_value} LESS ${_lower_limit})
# ENDMACRO(CHECK_RANGE_INCLUSIVE_LOWER)

# MACRO(ENSURE_VERSION requested_version found_version var_too_old)
#     NORMALIZE_VERSION( ${requested_version} req_vers_num )
#     NORMALIZE_VERSION( ${found_version} found_vers_num )

#     if (found_vers_num LESS req_vers_num)
#         set( ${var_too_old} FALSE )
#     else (found_vers_num LESS req_vers_num)
#         set( ${var_too_old} TRUE )
#     endif (found_vers_num LESS req_vers_num)

# ENDMACRO(ENSURE_VERSION)

# MACRO(ENSURE_VERSION2 requested_version2 found_version2 var_too_old2)
#     ENSURE_VERSION( ${requested_version2} ${found_version2} ${var_too_old2})
# ENDMACRO(ENSURE_VERSION2)

# MACRO(ENSURE_VERSION_RANGE min_version found_version max_version var_ok)
#     NORMALIZE_VERSION( ${min_version} req_vers_num )
#     NORMALIZE_VERSION( ${found_version} found_vers_num )
#     NORMALIZE_VERSION( ${max_version} max_vers_num )

#     CHECK_RANGE_INCLUSIVE_LOWER( ${req_vers_num} ${found_vers_num} ${max_vers_num} ${var_ok})
# ENDMACRO(ENSURE_VERSION_RANGE)
